Insole



FIG. 1 is a right side elevational view of an insole showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a cross-sectional view thereof as taken from line 6--6 of FIG. 2. 

The ornamental design for an insole, substantially as shown and described. 